866802166031274 has 64 divisors (see below), whose sum is σ = 2002706427335040. Its totient is φ = 247184900997120.

The previous prime is 866802166031239. The next prime is 866802166031293. The reversal of 866802166031274 is 472130661208668.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40229809 + ... + 57896820.

It is an arithmetic number, because the mean of its divisors is an integer number (31292287927110).

Almost surely, 2^{866802166031274} is an apocalyptic number.

866802166031274 is an abundant number, since it is smaller than the sum of its proper divisors (1135904261303766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866802166031274 is a wasteful number, since it uses less digits than its factorization.

866802166031274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98134535.

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 866802166031274 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred sixty-six million, thirty-one thousand, two hundred seventy-four".